Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690729 | Cement mixtures with alkali-intolerant matter and method | — | 1997-11-25 |
| 5657601 | Form tie rod spacer assembly for stay-in-place forms | Dennis L. Bean, William N. Brabston, Philip G. Malone, Stafford S. Cooper | 1997-08-19 |
| 5650562 | Cement treated with high-pressure CO.sub.2 | — | 1997-07-22 |
| 5639195 | Helical panel fastener | William N. Brabston, Philip G. Malone | 1997-06-17 |